<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="课程名称" prop="courseName">
        <el-input
          v-model="queryParams.courseName"
          placeholder="请输入课程名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="课程分类" prop="classList" >
        <el-select v-model="queryParams.courseClassId" placeholder="请选择" :popper-append-to-body="false">
          <el-option
            v-for="item in classList"
            :key="item.id"
            :label="item.courseClassName"
            :value="item.id">
          </el-option>
        </el-select>

      </el-form-item>
      <el-form-item label="课程附件名称" prop="courseFileName" label-width="100px;">
        <el-input
          v-model="queryParams.courseFileName"
          placeholder="请输入课程附件名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="课程介绍" prop="courseBrief">
        <el-input
          v-model="queryParams.courseBrief"
          placeholder="请输入课程介绍"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:course:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:course:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:course:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:course:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="courseList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="序号" align="center" prop="id" />
      <el-table-column label="课程名称" align="center" prop="courseName" />
      <el-table-column label="课程分类ID" align="center" prop="courseClassId" v-if="false"/>
      <el-table-column label="课程分类名称" align="center" prop="courseClassName" />
      <el-table-column label="课程类型" align="center" prop="courseType" >
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_course_type" :value="scope.row.courseType"/>
        </template>
      </el-table-column>
      <el-table-column label="课程附件" align="center" prop="courseFile" />
      <el-table-column label="课程附件名称" align="center" prop="courseFileName" />
      <el-table-column label="课程介绍" align="center" prop="courseBrief" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:course:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:course:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程基础信息对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="课程名称" prop="courseName">
          <el-input v-model="form.courseName" placeholder="请输入课程名称" />
        </el-form-item>
        <el-form-item label="课程分类" prop="courseClassId">
          <el-select v-model="form.courseClassId"  placeholder="请选择课程分类" :popper-append-to-body="false">
            <el-option
              v-for="item in classList"
              :key="item.id"
              :label="item.courseClassName"
              :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="课程类型" prop="courseType">
          <el-select v-model="form.courseType"  placeholder="请选择课程类型" :popper-append-to-body="false">
            <el-option
              v-for="dict in dict.type.sys_course_type"
              :key="dict.value"
              :label="dict.label"
              :value="dict.value">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="课程附件" prop="courseFile">
          <file-upload  v-model="form.courseFile" :fileSize="10"
                        :fileType="['doc', 'xls', 'ppt', 'pdf','mp4','png', 'jpg', 'jpeg']"
                        />
        </el-form-item>
        <el-form-item label="课程介绍" prop="courseBrief">
          <el-input  type="textarea" v-model="form.courseBrief" placeholder="请输入课程介绍" autosize/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCourse, getCourse, delCourse, addCourse, updateCourse,courseClassList } from "@/api/system/course";
export default {
  name: "Course",
  dicts:['sys_course_type'],
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程基础信息表格数据
      courseList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        courseName: null,
        courseClassId: null,
        courseType: null,
        courseFile: null,
        courseFileName: null,
        courseBrief: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        courseName : [
          { required: true, message: '请输入课程名称', trigger: 'blur' },
          { min: 1, max: 30, message: '课程名称长度必须介于 1 和 30 之间', trigger: 'blur' }
        ],courseClassId  : [
          { required: true, message: '请选择课程分类', trigger: 'blur' }
        ],
        courseType  : [
          { required: true, message: '请选择课程类型', trigger: 'blur' }
        ],
        courseBrief : [
          { required: true, message: '请输入课程介绍', trigger: 'blur' }
        ]
      },
      //课程分类
      classList:[]
    };
  },
  created() {
    this.getList();
    this.getClassList();
  },
  methods: {
    /** 查询课程基础信息列表 */
    getList() {
      this.loading = true;
      listCourse(this.queryParams).then(response => {
        this.courseList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    getClassList(){
      courseClassList().then(res => {
        console.log(res)
        if(res.code == 200){
          this.classList = res.data
        }else{
            console.log("查询不到数据")
        }
       }).catch(function (error) {
        console.log(error)
      })
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        courseName: null,
        courseClassId: null,
        courseType: null,
        courseFile: null,
        courseFileName: null,
        courseBrief: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程基础信息";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getCourse(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程基础信息";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            var obj = this.classList.find((item) => {return this.form.courseClassId ===  item.id})
            this.form.courseClassName = obj.courseClassName
            updateCourse(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            var obj = this.classList.find((item) => {return this.form.courseClassId ===  item.id})
            this.form.courseClassName = obj.courseClassName
            addCourse(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除课程基础信息编号为"' + ids + '"的数据项？').then(function() {
        return delCourse(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/course/export', {
        ...this.queryParams
      }, `course_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
